Citadel lost cause of server

Hello, I'm not sure if this is the right place to complain about this, but I’ll do it here anyway. I started a citadel around 5:15 PM (Europe time). Before even entering the boss area, I started lagging, and then the game closed by itself. When I reconnected, instead of being where I was before I died, I found myself in my hideout with the map lost. I'd like to point out that I have fiber internet, so the issue didn’t come from my end. Since citadels are quite hard to find, I would appreciate it if this one could be restored. Thank you for your response.